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    • 6. 发明授权
    • Wavelength division multiplexed multi-frequency optical source and
broadband incoherent optical source
    • 波分复用多频光源和宽带非相干光源
    • US5550666A
    • 1996-08-27
    • US261584
    • 1994-06-17
    • Martin Zirngibl
    • Martin Zirngibl
    • H04J14/00H04B10/272H04J14/02
    • H04J14/0226H04J14/0246H04J14/025H04J14/0282
    • A wavelength division multiplexing multi-frequency optical source is used to provide downstream transmission of information signals at discrete optical wavelengths from a central office to a plurality of optical network units. A passive optical demultiplexer in a remote node routes the downstream information signals to the optical networks according to optical wavelength. Broadband incoherent sources are used to provide upstream information signals at discrete optical wavelengths which are multiplexed and then routed to the central office for demultiplexing by the passive optical demultiplexer. A wavelength selective coupler in the central office and in each optical network unit combines and segregates downstream and upstream signals of different optical wavelengths for routing to a desired destination.
    • 波分复用多频光源用于提供从中心局到多个光网络单元的分立光波长的信息信号的下行传输。 远程节点中的无源光解复用器根据光波长将下行信息信号路由到光网络。 宽带非相干源用于提供离散光波长的上行信息信号,这些信号被多路复用,然后被路由到中心局,由无源光解复用器进行解复用。 中心局和每个光网络单元中的波长选择耦合器组合并分离不同光波长的下行信号和上行信号以路由到期望的目的地。
    • 9. 发明授权
    • Tunable receiver
    • 可调式接收器
    • US09166700B2
    • 2015-10-20
    • US12751990
    • 2010-03-31
    • Jurgen GrippJohn Edward SimsarianMartin Zirngibl
    • Jurgen GrippJohn Edward SimsarianMartin Zirngibl
    • H04B10/06H04B10/61H04J14/02H04J14/06
    • H04B10/613H04B10/61H04B10/611H04B10/6161H04J14/0204H04J14/021H04J14/0227H04J14/0257H04J14/0283H04J14/06
    • Embodiments for optical communication are provided in which tunable receiver selects and demodulates a first channel of a WDM signal. An example receiver includes a tunable local oscillator for generating a local oscillator signal approximately centered at a first channel wavelength. An optical hybrid of the receiver receives at a first input a wavelength-division-multiplexed (WDM) signal with a M-ary modulation scheme, wherein M is an integer greater than 2, and at a second input the local oscillator signal. A plurality of detectors detect in-phase and quadrature components of the first channel wavelength output of the optical hybrid, which are digitizing by a plurality of analog-to-digital converters. A digital signal processor processes the digitized in-phase and quadrature components in order to recover data carried by the first channel of the WDM signal.
    • 提供了光通信的实施例,其中可调谐接收机选择和解调WDM信号的第一信道。 示例性接收器包括用于产生大致居中在第一信道波长的本地振荡器信号的可调本地振荡器。 接收机的光混合器在第一输入处接收具有M进制调制方案的波分复用(WDM)信号,其中M是大于2的整数,在第二输入处接收本地振荡器信号。 多个检测器检测由多个模数转换器数字化的光混合器的第一通道波长输出的同相和正交分量。 数字信号处理器处理数字化的同相和正交分量,以便恢复由WDM信号的第一通道承载的数据。